Then until I see proof, we operate under the
Null Hypothesis and try to explain it as best as we can. We aren't here to prove abiogenisis, but the existence of chance supports it. We know chance exists, and are unsure about God, so while I have not proved it, I can support it more than your position.
(This is a little out of order, but bear with me, I typed up the questions as the answers popped up in my head)
First off, who in the world says the existence of a God would stop scientific advancement?
Because it happened before (not the existence per se, but bear with me, that wasn't the right question to ask). Islam ushered an age of knowledge through Islamic scholar scientists, but after a while, science became heresy, and scientific advancement there stopped. While in the dark ages, there was near to no scientific advancement, just the three field system, and the wheelbarrow.
a visit from Jesus himself would not change your mind.
No, it would. As long as he can prove he is who he says he is.
How can something like this explain free will, and the human mind?
Easy, free will is beneficial or neutral to survival. When it does pop up, it usually stays. Besides that, the only difference between a human mind and a chimpanzee's is that the human mind is more developed, specifically towards group mentality. It is the group that makes humanity at it's most powerful, and as many traits that further social cohesion would be favored under natural selection. If you really wanted to, you can teach a chimpanzee to use sign language, and might be suprised by the results.
And please, keep the questions coming.